import java.util.Scanner;

public class 判断体重指数 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        double height = scanner.nextDouble();
        double weight = scanner.nextDouble();
        double idex = weight/(height*height);
        if(idex<18.5 )
        {
            System.out.printf("偏瘦");
        }
        else if(18.5>=idex ||idex< 20.9)
        {
            System.out.printf("苗条");
        }
        else if(20.9>=idex ||idex<24.9)
        {
            System.out.printf("适中");
        }
        else if(idex>24.9){
            System.out.printf("超重");
        }
        //write your code here.....
    }
}